Here's the question you clicked on:
qwertyfreak
Estimate the roots of the equation by graphing. Round to the nearest tenth and write in set form, such as {-1.2,3.4}. x2 - 6= 0 Estimate the zeros of the equation by graphing. Round your solutions to the nearest tenth and write them in set form, such as {-1.2,3.4}. x2 - 12 = 0
e.......... as far as i could think, both for the equation will draw two vertical line on the graph.
|dw:1334177669703:dw| they are both curves of x^2 shifted 6 units and 12 units downwards, repectively now for the zeroes, x^2-6=0 and similarly x^2 -12 =0 so find x for each equation, and present them as elements of the sets (two different questions)
What do I do next to solve for the x's?
|dw:1334179689423:dw|
the value of x's at those points is your solution.
How do I find the value of those points?... or I guess whats my next step?
you should plot points until your graph look like this http://www4c.wolframalpha.com/Calculate/MSP/MSP39321a134388b6gfd2fc00001879gf5182cd4735?MSPStoreType=image/gif&s=48&w=296&h=300&cdf=RangeControl and at those points i showed arrow, you will have your solutions.